diff --git a/spawners_env/spawners_gen.lua b/spawners_env/spawners_gen.lua
index 4f91f0f..46f6d01 100644
--- a/spawners_env/spawners_gen.lua
+++ b/spawners_env/spawners_gen.lua
@@ -43,14 +43,20 @@ local function place_spawner(param)
             pos.y = pos.y + 1
         end
 
-        local spawner_name = spawners_env.registered_spawners_names[math.random(1, #spawners_mobs.registered_spawners_names)]
+        local spawner_name
 
-        if gen_obj == 'dungeon' then
-            minetest.set_node(pos, { name = spawner_name })
-            minetest.log('action', '[Spawners] dungeon spawner ' .. spawner_name .. ' placed at: ' .. minetest.pos_to_string(pos))
-        else
-            minetest.set_node(pos, { name = spawner_name })
-            minetest.log('action', '[Spawners] temple spawner ' .. spawner_name .. ' placed at: ' .. minetest.pos_to_string(pos))
+        if #spawners_env.registered_spawners_names > 0 then
+            spawner_name = spawners_env.registered_spawners_names[math.random(1, #spawners_env.registered_spawners_names)]
+        end
+
+        if spawner_name then
+            if gen_obj == 'dungeon' then
+                minetest.set_node(pos, { name = spawner_name })
+                minetest.log('action', '[Spawners] dungeon spawner ' .. spawner_name .. ' placed at: ' .. minetest.pos_to_string(pos))
+            else
+                minetest.set_node(pos, { name = spawner_name })
+                minetest.log('action', '[Spawners] temple spawner ' .. spawner_name .. ' placed at: ' .. minetest.pos_to_string(pos))
+            end
         end
     end
 end